EP1289433A1 - In der hand haltbares chirurgisches werkzeug - Google Patents

In der hand haltbares chirurgisches werkzeug

Info

Publication number
EP1289433A1
EP1289433A1 EP01934207A EP01934207A EP1289433A1 EP 1289433 A1 EP1289433 A1 EP 1289433A1 EP 01934207 A EP01934207 A EP 01934207A EP 01934207 A EP01934207 A EP 01934207A EP 1289433 A1 EP1289433 A1 EP 1289433A1
Authority
EP
European Patent Office
Prior art keywords
limbs
pivot pin
instrument
aperture
mortice
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01934207A
Other languages
English (en)
French (fr)
Other versions
EP1289433B1 (de
Inventor
Richard Thompson Sinton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1289433A1 publication Critical patent/EP1289433A1/de
Application granted granted Critical
Publication of EP1289433B1 publication Critical patent/EP1289433B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/28—Surgical forceps
    • A61B17/2812—Surgical forceps with a single pivotal connection
    • A61B17/2816—Pivots
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/08—Accessories or related features not otherwise provided for
    • A61B2090/0813—Accessories designed for easy sterilising, i.e. re-usable

Definitions

  • the present invention relates to a hand instrument and to a method of sterilisation thereof.
  • the instrument is suitable for use as a pincer instrument such as forceps, needle holders, scissors and clamps and the invention relates particularly to surgical instruments .
  • Hand instruments of the foregoing type typically comprise two limbs pivotally joined by a simple screw or rivet arrangement, or they may be joined by a "box joint" arrangement wherein part of one limb passes through a widened hollow portion of the other limb.
  • MRSA methicillin resistant Staphylococcus Aureus
  • Instruments which have been used in surgical procedures may be exposed to a wide range of pathogens and infection carrying vectors which may be passed from patient to patient if the instruments are not completely and efficiently sterilised between surgical procedures.
  • the instrument may be immersed in a cleaning medium with the limbs in a first open condition, then re-immersed in the cleaning medium in at least a second open position to expose as much of the sliding contact surfaces (and other portions of the instrument) to the cleaning medium as possible.
  • the cleaning medium may be heated water containing one or more disinfecting/sterilising agents such as for example, fungicides, bactericides, sodium hypochlorite, etc.
  • each limb portion has at least two sliding contact surfaces to be cleaned, as opposed to the usual one sliding contact surface per limb portion of instruments having only a simple pivot pin arrangement.
  • Box joints are particularly preferred for use by surgeons for surgical purposes because of the friction joint between the limbs allowing the limbs to retain a fixed opening but their construction does not facilitate - their economic or easy dismantling for cleaning and sterilising purposes .
  • the limb portions can be disconnected when they are rotated related to each other to a pre-determined release angle and the respective limb portions moved apart along a pivotal axis of the pivot thereof.
  • the present invention provides a scissor-action hand instrument having first and second limbs pivotally connected together in between their ends, wherein the pivotal connection is of a so-called box-joint type wherein the first limb has a tenon portion and the second limb has a mortice portion through which said tenon portion extends, said second limb having at said mortice portion a pivot pin characterised in that said pivot pin has a neck portion and an enlarged head portion, said tenon portion having a keyhole aperture with a first reduced diameter portion through which said pivot pin neck portion is disposable in use of the instrument, and a second enlarged diameter portion spaced apart from and connected to said first reduced diameter portion and through which said pivot pin head portion is passable for assembly and disassembly of the limbs, the pivot pin neck portion being translatable between said first and second aperture portions, said mortice portion having a central portion opening at one side around said pivot pin head portion which central portion is formed and arranged for allowing passage therethrough of said tenon portion when said instrument
  • the pivot pin neck portion has a reduced thickness along an axis extending transversely of the principal plane of said mortice portion, and said first and second aperture portions are connected by a reduced width connection portion so that said pivot pin neck portion can only pass along said aperture connecting portion when said instrument is in a substantially open position with said limbs extending substantially transversely of each other.
  • the mortice and tenon portions are formed and arranged so that the opposed faces thereof are in substantial frictional inter-engagement with each other when said instrument is in a partly open position, said frictional inter-engagement being at least sufficient to retain the relative disposition of said limbs against the forces of gravity acting on an unsupported one of said limbs.
  • the arrangement of the mortice and tenon portions is formed and arranged with frictional inter-engagement to hold the first limb over a range of angles in the range of from 0° (jaws closed) to 80° (jaws open) .
  • a resilient biasing means formed and arranged in use to bias the first and second limbs so that the respective jaw portions of each limb are pivotally spaced apart.
  • the resilient biasing means may comprise a sprung member which may be secured to one or other of the limbs and formed and arranged in use to bear against the other of the limbs.
  • a limiting means formed and arranged in use to limit the extent of pivotal movement between the limbs.
  • said limiting means may comprise an elongate member which is secured to one of the limbs and which co-operates with a stop portion on the other of the limbs to limit the pivotal movement of the limbs.
  • the limiting means may be formed and arranged so as to be disengageable.
  • the instrument may be made of any suitable material though for use in surgical applications steel, desirably stainless steel is preferred.
  • the resilient biasing means may also desirably be made of steel.
  • the present invention also provided a method of sterilising a hand instrument of the present invention comprising the steps of: providing a hand instrument according to the present invention; disengaging said first and second limbs from one another; placing the disengaged limbs in a sterilising environment for a pre-determined period of time; and removing the limbs from the sterilising environment.
  • said method includes a further step, prior to placing in a sterilising environment, of cleaning by scrubbing.
  • said sterilising environment is in the form of an autoclave.
  • Fig. 1 is a plan view of a surgical instrument according to the present invention
  • Fig. 2 is the plan view of the surgical instrument shown in
  • Fig. 3 is a side view showing the limbs of the surgical instrument
  • Fig. 4 a to c show respectively a underside view of the pivot pin, a left side view of the pivot pin, and a plan view of the pivot pin of the surgical instrument;
  • Fig. 5 shows in more detail the aperture in one of the limbs of the surgical instrument.
  • a surgical instrument generally indicated by reference number 1 and shown in Fig. 1, comprises first and second limbs 2,4 pivotally connected together. Each limb has at one end a finger engagement aperture 6,8 and at the other end a jaw portion 10,12. The first and second limbs 2,4 are pivotally connected together between the ends.
  • the pivotal connection is in the form of a "box type joint" and the first limb 2 has a tenon portion 10 which co-operates with a mortice portion 16 on the second limb 4.
  • the tenon portion 14 extends through the mortice portion 16.
  • pivot pin 18 which is screwably 19 attached into the second limb 4.
  • the pivot pin 18 has a neck portion 20 and an enlarged head portion 22.
  • the keyhole aperture 24 has a first reduced diameter portion 26 and a second enlarged diameter portion 28.
  • the first reduced diameter portion 26 is of a diameter approximately equal to the diameter of the neck portion 20 of the pivot pin 18 such that pivot pin 18 is rotatable within the first reduced diameter portion 26.
  • the second enlarged, diameter portion 28, which is spaced apart from and connected to the first reduced diameter portion 26 is of a diameter approximately equal to the head portion 22 of the pivot pin 18 such that the head 22 of the pivot pin 18 may be passed through for assembly and disassembly of the limbs 2,4 of the instrument 1.
  • the passage between the first reduced diameter portion 26 and the second enlarged diameter portion 28 of the aperture 24 is such that the pivot pin neck portion 20 may pass along.
  • the mortice portion 16 of the second limb 4 has a central portion opening 30 at one side around the pivot pin head portion 22 which allows for passage of the tenon portion 14 of the first limb 2 when the instrument 1 is in a open position with the limbs 2,4 at approximately 90° to each other (not shown) .
  • the central portion 30 opening on the mortice portion 16 is just slightly wider than the width of the tenon portion 14 on the first limb 2. This arrangement is such that the limbs 2,4 may be assembled and disassembled only with the first and second limbs 2,4 arranged substantially transversely or at 90° to each other, that is, in a condition in which they would not normally be found in normal surgical use.
  • the pivot pin neck portion 20 has a reduced thickness 21 along an axis extending transversely of the principal plane of the mortice portion 16 in such a way that the first and second aperture portions 26,28 are connected by a reduced width connecting portion 32 so that the pivot pin neck portion 20 can only pass along the passage connecting the first reduced diameter portion 26 and the second enlarged diameter portion 28 of the aperture 24 when then limbs 2,4 of the instrument 1 are in the above noted transversely or 90° position.
  • the mortice 16 and tenon 14 portions of the first 2 and second limbs 4 are formed and arranged in such a way that the opposed faces are in frictional interconnection with each other when the instrument 1 is in a partly open position.
  • This frictional inter-engagement is at least sufficient to retain the relative disposition of the limbs 2,4 with respect to one another against the forces of gravity acting on the unsupported one of the limbs. This is particularly desirable in surgical procedures where a surgeon will expect to have an instrument 1 presented to him by a nurse with the instrument
  • a lug 34,36 Adjacent the finger portion 6,8 of each of the limbs 2,4 there is a lug 34,36, each provided with a set of ratchet teeth 38 formed to co-operate with each other so that when the first and second lugs (34,36) engage with each other the ratchet teeth 38 interengage thereby locking the surgical instrument 1 in a closed condition (not shown) .
  • a biasing arm mounted on the first limb, which arm bears against the second limb to maintain the jaws of the instrument slightly apart.
  • a limiting peg may be provided on the first limb which peg engages with a slot in an end of the biasing arm.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Materials For Medical Uses (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
EP01934207A 2000-06-10 2001-06-06 In der hand haltbares chirurgisches werkzeug Expired - Lifetime EP1289433B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB0014120.0A GB0014120D0 (en) 2000-06-10 2000-06-10 Hand instrument
GB0014120 2000-06-10
PCT/GB2001/002474 WO2001095812A1 (en) 2000-06-10 2001-06-06 Hand held surgical instrument

Publications (2)

Publication Number Publication Date
EP1289433A1 true EP1289433A1 (de) 2003-03-12
EP1289433B1 EP1289433B1 (de) 2009-01-07

Family

ID=9893340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01934207A Expired - Lifetime EP1289433B1 (de) 2000-06-10 2001-06-06 In der hand haltbares chirurgisches werkzeug

Country Status (7)

Country Link
US (1) US20040093020A1 (de)
EP (1) EP1289433B1 (de)
AT (1) ATE419798T1 (de)
AU (2) AU2001260509B2 (de)
DE (1) DE60137325D1 (de)
GB (1) GB0014120D0 (de)
WO (1) WO2001095812A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018102559A1 (de) * 2018-02-06 2019-08-08 Aesculap Ag Medizinisches Instrument

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